modification of angrau hand operated maize sheller for enhanced capacity b. ashwin kumar 2013

149 Pages·2016·5.64 MB·English

MODIFICATION OF ANGRAU HAND
OPERATED MAIZE SHELLER FOR
ENHANCED CAPACITY

B. ASHWIN KUMAR
B.Tech (Agril. Engg.)

MASTER OF TECHNOLOGY IN
AGRICULTURAL ENGINEERING

(PROCESSING AND FOOD ENGINEERING)

2013
MODIFICATION OF ANGRAU HAND
OPERATED MAIZE SHELLER FOR
ENHANCED CAPACITY

BY

B. ASHWIN KUMAR
B.Tech (Agril. Engg.)

THESIS SUBMITTED TO THE ACHARYA N. G. RANGA
AGRICULTURAL UNIVERSITY IN PARTIAL FULFILMENT
OF THE REQUIREMENTS FOR THE AWARD OF THE
DEGREE OF

MASTER OF TECHNOLOGY IN
AGRICULTURAL ENGINEERING
(PROCESSING AND FOOD ENGINEERING)

CHAIRPERSON: Dr. P.V.K JAGANNADHA RAO

DEPARTMENT OF AGRICULTURAL PROCESS AND FOOD ENGINEERING
COLLEGE OF AGRICULTURAL ENGINEERING, BAPATLA – 522101

ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY
RAJENDRANAGAR, HYDERABAD – 500 030
2013
CERTIFICATE

Mr. B. ASHWIN KUMAR has satisfactorily prosecuted the course of research
and that thesis entitled “MODIFICATION OF ANGRAU HAND OPERATED
MAIZE SHELLER FOR ENHANCED CAPACITY” submitted is the result of
original research work and is of sufficiently high standard to warrant its presentation to
the examination. I also certify that neither the thesis nor its part thereof has been

previously submitted by her for a degree of any university.

Date: Chairperson
CERTIFICATE

This is to certify that the thesis entitled “MODIFICATION OF ANGRAU
HAND OPERATED MAIZE SHELLER FOR ENHANCED CAPACITY”
submitted in partial fulfillment of the requirements for the degree of “MASTER OF
TECHNOLOGY IN AGRICULTURAL ENGINEERING” in the major field of
“PROCESSING AND FOOD ENGINEERING” of the Acharya N.G. Ranga
Agricultural University, Hyderabad is a record of the bonafide research work carried out
by Mr. B.ASHWIN KUMAR under my guidance and supervision.
No part of the thesis has been submitted by the student for any degree or
diploma. The published part and all the assistance received during the course of the
investigations have been duly acknowledged by the author of the thesis.

Thesis is approved by Student Advisory Committee

CHAIRPERSON Dr. P.V.K JAGANNADHA RAO
Professor
Department of Agricultural Engineering,
Agricultural College, Naira.

MEMBER Dr. L. EDUKONDALU
Assistant Professor
Department of Agricultural Process
and Food Engineering,
College of Agricultural Engineering, Bapatla

MEMBER Er. K. LAVANYA
Assistant Professor
Department of Agricultural Process
and Food Engineering,
College of Agricultural Engineering, Bapatla

Date of final viva-voce:
DECLARATION

I, B. ASHWIN KUMAR hereby declare that the thesis entitled
“MODIFICATION OF ANGRAU HAND OPERATED MAIZE SHELLER FOR
ENHANCED CAPACITY” submitted to the Acharya N.G. Ranga Agricultural
University for the degree of MASTER OF TECHNOLOGY IN AGRICULTURAL
ENGINEERING is the result of original research work done by me. I also declare that
the thesis or any part has not been published earlier in any manner.

Place : Bapatla (B.ASHWIN KUMAR)

Date : I.D.NO. BEM-11-001
LIST OF CONTENTS

Chapter No Title Page No
I INTRODUCTION 1
II REVIEW OF LITERATURE 3
III MATERIAL AND METHODS 19
IV RESULTS AND DISCUSSION 35
V SUMMARY AND CONCLUSIONS 64
LITERATURE CITED 65
APPENDICES
APPENDIX - A 69
APPENDIX - B 122
LIST OF FIGURES
Figure Page
Title
No. No.
3.1 Schematic diagram of cylinder in maize sheller 24
3.2 Schematic diagram of concave in maize sheller 25
3.3 Overall view of modified ANGRAU hand operated maize
27
sheller
3.4 Schematic diagram of modified ANGRAU hand operated maize
30
sheller
3.5 Schematic diagram of modified tubular maize sheller 34
4.1 Effect of moisture content on length for different varieties of
35
maize
4.2 Effect of moisture content on breadth for different varieties of
36
maize
4.3 Effect of moisture content on thickness for different varieties of
36
maize
4.4 Effect of moisture content on sphercity for different varieties of
38
maize
4.5 Effect of moisture content on volume for different varities of
40
maize
4.6 Effect of moisture content on surface area for different varities
41
of maize
4.7 Effect of moisture content on bulk density for different varities
43
of maize
4.8 Effect of moisture content on true density for different varities
45
of maize
4.9 Effect of moisture content on porosity for different varities of
46
maize
4.10 Effect of moisture content on thousand grain weight for different
48
varities of maize
4.11 Effect of moisture content on angle of repose for different
49
varities of maize on M.S Steel surface
Figure Page
Title
No. No.
4.12 Effect of moisture content on angle of repose for different
51
varities of maize on plywood surface
4.13 Effect of moisture content on angle of repose for different
52
varities of maize on glass surface
4.14 Effect of moisture content on coefficient of static friction for
54
different varities of maize on M.S steel surface
4.15 Effect of moisture content on coefficient of static friction for
55
different varities of maize on plywood surface
4.16 Effect of moisture content on coefficient of static friction for
56
different varities of maize on glass surface
4.17 Shelling efficiency at different moisture contents for both
58
existing and modified ANGRAU maize sheller
4.18 Unshelled grain percentage at different moisture contents for
59
both existing and modified ANGRAU maize sheller
4.19 Visible damage percentage at different moisture contents for
59
both existing and modified ANGRAU maize sheller
4.20 Shelling efficiency under different feed rates 60
4.21 Unshelled efficiency under different feed rates 61
4.22 Visible damage efficiency under different feed rates 62
LIST OF TABLES
Page
Table No. Title
No.
3.1 Details of the construction features of existing and
27
modified ANGRAU hand operated maize sheller
4.1 Specifications of modified tubular maize sheller 62
4.2 Performance evaluation of modified tubular maize
63
sheller
LIST OF PLATES
Plate No. Title Page No.
2.1 ANGRAU hand operated maize sheller 4
3.1 Digital vernier callipers 21
3.2 Apparatus used for measuring angle of repose 23
3.3 Cylinder in maize sheller 24
3.4 Concave of maize sheller 25
3.5 Modified ANGRAU hand operated maize sheller 26
3.6 Modified tubular hand maize sheller 34